For Langjökull, Snæfellsjökull, Solheimajökull, artist Katie Paterson recorded the sound of three glaciers in Iceland. She then pressed these sounds on three records made of the melt water of these three glaciers. Three turn tables played the records for nearly two hours until they completely melted. A sample of one of the records can be heard here. 

It seems like the ultimate piece of conceptual art. Next to that it points at present environmental problems like global warming an the perishability of our planet in a beautiful, subtle way. 

(via Joachim Baan)